http://www.oldschoolhiphop.com Old School Hip Hop Features biographies, recordings and videos from old school rap artists who performed prior to 1986. http://www.yale.edu/ynhti/curriculum/units/1993/4/93.04.04.x.html The Evolution of Rap Music in the United States 1993 essay includes guidelines for teaching about rap music (and graffiti) to middle and high school students. Includes a bibliography and brief lesson plans. http://home.online.no/~dj4joy/ The Four Elements Comprehensive look at the history of hip hop music. Includes pictures and links.